Inputs

Outputs

This message is given if the function specified does not
exist in the current database.

Description

DROP FUNCTION will remove references to an existing C
function. To execute this command the user must be the owner of
the function. The input argument types to the function must be
specified, as only the function with the given name and argument
types will be removed.

Notes

Refer to CREATE
FUNCTION to create aggregate functions.

Usage

This command removes the square root function:

DROP FUNCTION sqrt(int4);

Bugs

No checks are made to ensure that types, operators or access
methods that rely on the function have been removed first.

Compatibility

DROP FUNCTION is a Postgres
language extension.

SQL/PSM

SQL/PSM is a proposed standard to enable function
extensibility. The SQL/PSM DROP FUNCTION statement has the
following syntax: